Hyperfine Fields in an Ag/Fe Multilayer Film Investigated with 8Li beta-Detected Nuclear Magnetic Resonance

Abstract

Low energy $\beta$-detected nuclear magnetic resonance ($\beta$-NMR) was used to investigate the spatial dependence of the hyperfine magnetic fields induced by Fe in the nonmagnetic Ag of an Au(40 Å)/Ag(200 Å)/Fe(140 Å) (001) magnetic multilayer (MML) grown on GaAs. The resonance lineshape in the Ag layer shows dramatic broadening compared to intrinsic Ag. This broadening is attributed to large induced magnetic fields in this layer by the magnetic Fe layer. We find that the induced hyperfine field in the Ag follows a power law decay away from the Ag/Fe interface with power $-1.93(8)$, and a field extrapolated to $0.23(5)$ T at the interface.

5 pages, 4 figure. To be published in Phys. Rev. B

References in corpus (5)

• Near-Surface Structural Phase Transition of SrTiO${}_3$ Studied with Zero-Field $\beta$-Detected Nuclear Spin Relaxation and Resonance
• Local Magnetic Properties of a Monolayer of Mn12 Single Molecule Magnets
• Giant Vortices Below the Surface of NbSe${}_2$ Detected Using Low Energy $\beta$-NMR
• $\beta$-NMR of Isolated ${}^8$Li${}^{+}$ Implanted into a Thin Copper Film
• Beta-NMR of Isolated Lithium in Nearly Ferromagnetic Palladium

Cited by in corpus (2)

• Depth-resolved measurement of the Meissner screening profile in a niobium thin film from spin-lattice relaxation of the implanted $\beta$-emitter ${}^8$Li
• Proximal magnetometry of monolayers of magnetic moments